The 24-year-old was quick to show his quality yet again against Liverpool on Saturday and kept out impressive strikes from the likes of Danny Ings and Jordan Ibe.
De Gea was widely expected to complete a move to Real Madrid over the summer but after a complicated transfer collapsed, he completed a full U-turn to put pen to paper on a new 4-year-deal at Old Trafford.
That was fantastic news for United and Neville feels that De Gea’s performance against Liverpool shows exactly why he is so important to the club.
He said: “It’s a big thing for Manchester United to have him stay for the rest of this season.
“If Manchester United had Sergio Romero in the net today – it’s no disrespect to him – maybe one or two of those moments Liverpool had wouldn’t have been saved.
“He made a really good save at the end from Jordon Ibe, so I think when you look at it and think about De Gea today, he will save Manchester United points.
Neville also spoke of how important he feels De Gea will be throughout the whole of United’s season, and claimed he can relax knowing the Spaniard will be in goal every week.
He added: “De Gea’s a match-winning goalkeeper, and Manchester United have had too many experiences – good and bad over the years – around goalkeepers.
“When they had Peter Schmeichel and Edwin van der Sar, it’s looked rock solid. De Gea in the last couple of years has been fantastic.
“In between, it hasn’t been so. There’s been a lot of chopping and changing, and you just felt as though it was moving towards that type of moment with Romero, Valdes, Lindegaard – that type of moment where you think ‘who’s going to be in the net’.
“That uncertainty has been removed, even if it’s only for 12 months.
“For now, the good thing for Manchester United – and me being a fan – is that I can relax knowing he’s going to be in the net every week.”
Neville has pretty much summed up everything that needs to be said. Even if De Gea is only here for another year, he could make a crucial difference in any potential title-charge this season.
For now though, United fans will be glad to see one of the worlds best goalkeepers playing in red week-in week-out for the club, something which seemed hugely unlikely at points during the summer.